Matteo Franceschetti began optimizing his life long before he started a tech company dedicated to sleep: heart rate monitored on an Apple Watch, a ketogenic diet, Peloton exercise bikes–one at home, one in the office. But sleep? The day “hes spent” between the sheets felt, to him, unquantified and underutilized. Looking to squeeze more out of his unconscious hours, Franceschetti created Eight Sleep, to “unlock the full potential” of slumberland. The company’s latest invention is a “smart mattress” that ways every toss and turn, manipulates each sleep cycle, scores each night’s rest, and then use machine learning to “tune” the bed to your preferences.